Update: Suspect captured in shooting deaths of 3 state teens

NIAGARA, Wis. — A gunman suspected of opening fire on a group of young swimmers gathered along a riverbank was arrested Friday after he emerged from woods near the scene where three teenagers were slain and a fourth person was wounded, all from Michigan.

Scott J. Johnson, 38, was dressed in camouflage when deputies confronted him following an all-night manhunt. He dropped his assault rifle as officers approached.

"We believe he was in the woods and near our officers who were also in the woods all night," said Jerry Sauve, chief deputy sheriff in Marinette County.

Nine young adults had gathered near a railroad bridge on the Menominee River when the gunman appeared late Thursday afternoon and opened fire, authorities said.

Investigators have not determined a motive. The sheriff said there was no communication between the gunman and his victims.

Johnson, who was from the nearby town of Iron Mountain, Mich., was taken to jail to await an initial court appearance. He had not been formally charged, and it was not immediately known whether he had an attorney.

More than 100 law enforcement officers from at least 10 agencies were called in to hunt for the gunman in Thursday's attack. Authorities had set up roadblocks and evacuated some homes in the northern Wisconsin area just across the state line from Michigan's Upper Peninsula. The shooting happened about 3 miles south of Iron Mountain.

Sheriff Jim Kanikula said the shooter was only 7 to 10 feet from one victim when he fired.

"There's a saying up here that this is a great place to raise kids," said Randy Van Gasse, school superintendent in nearby Norway, Mich., where 17-year-old victim Tiffany Pohlson would have been a senior in the fall.

"That's been violated and we don't know why," he said. "This is obviously a shock to everybody."

A woman who answered the door at a Kingsford, Mich., residence and identified herself as Johnson's mother said she was too distraught to speak with a reporter.

The other dead were identified as Anthony Spigarelli, 18; and Bryan Mort, 19. A fourth victim, 20-year-old Daniel Louis Gordon, was wounded. All were also from Michigan.

Spigarelli's aunt, Teresa Spigarelli, remembered her nephew as "spunky, sassy." She said he was cocky even when he was in fifth grade. She said he was handsome enough that he could have been a model.

Niagara, where a sign outside of town calls it "the city of scenic beauty," is about 210 miles north of Milwaukee. Across the Menominee River is Iron Mountain and Kingsford, Mich. The area is known for logging and tourism. The combined population of the cities is about 15,000.